Camless drive of a swinging pre-gripper feeder

Details Camless drive of a swinging pre-gripper feeder Camless drive of a swinging pre-gripper feeder

1979-06-26

1981-10-20

Fisher, J. Reed

Printing

Rolling contact machines

Rotary

101246, 101409, 271267, B41F 2105, B65H 510, B65H 514

Patent

active

042954223

ABSTRACT:
Camless drive of an oscillating pregripper feeder for a sheet-fed rotary printing machine having a feed table, an impression cylinder and an oscillating pregripper feeder disposed between the feed table and the impression cylinder, the camless drive including a seven-bar linkage transmission system, the bars of which are articulatingly connected to one another solely by pivot joints, two cranks connected to the transmission system and revolvable at the same angular velocity for driving the transmission system, one of the linkages forming at least part of a pregripper of the oscillating pregripper feeder, the one linkage being disposed directly behind one of the cranks, the oscillating pregripper feeder having means for gripping a sheet to be printed which lies on the feed table, and the seven-bar linkage transmission system being actuatable by the cranks for transporting the gripped sheet along a given path directly to the impression cylinder.

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